Glucose molecules provide energy to power the swimming motion of sperm. In this example, the sperm are changing ________
A) chemical energy into kinetic energy
B) chemical energy into potential energy
C) kinetic energy into potential energy
D) kinetic energy into chemical energy
A
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Homologous chromosomes undergo recombination during
a. prophase II. b. metaphase I. c. metaphase II. d. both prophase I and II. e. prophase I.
The accompanying figure represents which chromosomal change?
a. inversion b. deletion c. duplication d. translocation e. aneuploidy
What is the most accurate description of the consequence(s) of the increased oxygen (O2) in the atmosphere during and after the Silurian Period?
A. Conquest of land by arthropods. B. Conquest of land by arthropods and vertebrates and an increase in animal body sizes. C. Increases in animal body sizes and appearance of shelled organisms. D. Conquest of land by arthropods and vertebrates. E. Conquest of land by arthropods and vertebrates, and plants.
Helicase
A. supercoils DNA. B. unwinds DNA. C. unwinds RNA. D. winds RNA.